Cooling device for explosive-engines.



No. 737,048. PATENTED AUG. 25, 1903'.

R. J. voss. 000mm DEVICE FOR EXPLOSIVE ENGINES.

APPLIOATION FILED APR. 6, 1903.

K0 MODEL.

V Q/ HM myz y 5 as (20., FHOTQ-L|THO-. WASHINGTON n c vide an improved mechanism for cooling the Tatented August 25, 190l PATENT OFFICE;

RICHARD J. voss, on DAVENPORT, iowA.

COOLING DEVICE FOR EXPLOSIVE-ENGINES.

SPECIFICATION forming part of Letters Patent No. 737,048, dated August 25, 1903.

Application filed April 6, 1903. Serial No. 151,3 80. (N0 model.)

To all whom it'mayconcern:

Be itknown that I, RICHARD J. VOSS, a citizen of the United States, residing at Davenport, in the county of Scott and State of Iowa, have invented a new and useful Cooling De- Vice for Explosive-Engines, of which the following is a specification.

This invention relates to certain improvements in engines of that general class in which an explosive compound is used for motive power, and has for its principal object toprosame.

A further object of the invention is to pro- Vide a device of simple and inexpensiveconstruction to be operated by the explosive-engine and by means of which a continuous current of cool air may be caused to travel through the jacket of the engine-cylinder, and thereby maintain the same at the desired temperature.

With these and other objects in view the invention consists in the novel construction and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and particularly pointed out in the appended claim, it being understood that various changes in the form, proportions, and

minor details of construction may be made without departing from the spirit or sacrificing any of the advantages of the invention. In the drawings, Figure 1 is alongitudinal sectional elevation of a cylinder-cooling de% vice constructed and arranged in accordance with the invention. Fig. 2 is a transverse sectional elevation of the same on line 2 2 of Fig. l.

Similar numerals of reference designate corresponding parts in both figures of the drawings.

1 indicates a cylinder formed of any suitable material and which may be-cast integral with the cylinder of the gasengine-or secured thereto in any suitable manner. The cylinder contains a piston'2 of the trunktype that is connected by a rod 3 to an eccentric-strap 4, surrounding an eccentric 5, which may be operated by the main shaft of the engine or driven from an auxiliary source of power.

The jacket 7, which surrounds the cylinder of the gas-engine, may be of the useful construction employed in maintaining the circulation of Water; but there is provided at a point adjacent to the sparking-terminals a plurality of openings through which air is drawn by the movement of the piston 2, the heated air being drawn from the jacket into the cylinder 1 immediately after each explosion and being thence forced from said 'cyl inder or allowedto escape in any desired manner. The air-entrance openings of the jacket of the gas-engine are disposed near one end thereof, and from a point near the opposite end thereof leads a pipe 8, extending into the closed end of the cylinder 1 and supported in position therein bya spider or partition 9. At the end of pipe 8 is avalve-seat for the reception-of 'a'valve 10, the stem of which is surrounded by a helical compression spring 11, normally tending to maintain the Valve in closed position, but opening under the partial vacuum created on the outward movement of the piston 2 in order to allow the air from the cylinder-jacket to enter said cylinder 1. The piston 2 is provided with an air-passage'12, at the inner end of which is a valve-seat for the reception of a valve 13, the stem of which is surrounded by a helical com pression-spring l4, normally tending to main= tain the valve in closed position; but during the inward movement of the piston against the pressure of air Within the cylinder its valve is open and the air in the cylinder escapes through the passage 12 in the piston.

In the operation of the device the piston is reciprocated by the mechanism described and at each outstroke creates a partial vacuum within the cylinder, causing the passage of a current of air through the jacket of the gas-engine and effectually cooling the same, the heated air entering the cylinder 1 until the piston has completed its outward move ment. On the instroke of the piston the valve 10 is immediately closed, while the valve 13 is opened and the heated air in the cylinder is allowed to escape.

In some cases it may not be'desired to al' low the flow of air to the full capacity ofthe cylinder 1, especially in Very cold weather or where the gas-engine is outdoors or otherwise is subjected to comparatively low temperature. To regulate aquantity of air passing through the jacket, I employ a valved nipple 16, secured to one side of the cylinder 1 and ICO so arranged that it may be turned to allow a l admitting thereinto a quantity of air, thereby greater or less quantity of atmospheric air to to diminish the quantity of cooling-air flowflow into the cylinder and mingle with the ing through the cylinder-jacket.

heated air from the jacket. In testimony that I claim the foregoing as 15 5 Having described the invention, What is my own Ihave hereto aflixed my signature in claimed is- I the presence of two witnesses.

1 n '1! e combination n itha as en i e, of a cyl RICH RD l VOSS.

inder having valved communication With the jacket of the engine, a valved piston in said Witnesses: 1o cylinder, means for operating the piston, and JOHN HEINZ,

a governing-valve carried by the cylinder for HENRY J. VOSS. 

